| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Tumor stage T2a | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| Tumor stage T2b | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| Tumor stage T2c | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| Tumor-node-metastasis (TNM) pancreas tumor staging | Stage | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (II): Tumor of uterine cervix invades beyond the uterus but not to pelvic wall or to lower third of vagina | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a (IIA): Tumor of uterine cervix, T2 without parametrial invasion | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b (IIB): Tumor of uterine cervix, T2 with parametrial invasion | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (II): Endometrial tumor invades cervix, but does not extend beyond uterus | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a (IIA): Endometrial tumor with endocervical glandular involvement | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b (IIB): Endometrial tumor with cervical stromal invasion | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (II): Vaginal tumor invades paravaginal tissues but not to pelvic wall | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (II): Fallopian tube tumor involves one or both tube(s) with pelvic extension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a (IIA): Fallopian tube tumor with extension and/or metastasis to the uterus and/or ovaries | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b (IIB): Fallopian tube/ovarian tumor with extension to other pelvic structures | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2c (IIC): Fallopian tube/ovarian tumor with pelvic extension (T2a or b) with malignant cells in ascites or peritoneal washings | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a: Prostate tumor involves one lobe | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor causing bone erosion or destruction, except for the posterior antral wall, including extension into hard palate and/or middle nasal meatus | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor > 2 cm but < 4 cm in greatest dimension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor > 2 cm but < 4 cm in greatest dimension without extraparenchymal extension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor extends into nasal cavity | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor extends to soft tissue of oropharynx and/or nasal fossa | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor extends to supraglottis and/or subglottis, and/or with impaired vocal cord mobility | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor extends to vocal cord(s) with normal or impaired mobility | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor invades more than one subsite of hypopharynx or an adjacent site, or measures > 2 cm but < 4 cm in greatest dimension, without fixation of hemilarynx | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Aerodigestive tract tumor invades mucosa of >1 adjacent subsite of supraglottis/glottis/region outside supraglottis, (mucosa of base of tongue/vallecula/medial wall of piriform sinus) without fixation of larynx | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a: Aerodigestive tract tumor without parapharyngeal extension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b: Aerodigestive tract tumor with parapharyngeal extension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2:Lung tumor with any of these features:>3cm in greatest dimension, involves main bronchus >2cm distal to carina;invades visceral pleura;assoc with atelectasis/obstructive pneumonitis extends to hilar region, does not involve entire lung | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Renal tumor > 7.0 cm in greatest dimension limited to the kidney | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Breast tumor > 2 cm but <= 5 cm in greatest dimension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Tumor invades muscularis propria | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Stomach tumor invades muscularis propria or subserosa | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a: Stomach tumor invades muscularis propria | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b: Stomach tumor invades subserosa | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Ampulla tumor invades duodenal wall | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Tumor limited to pancreas and > 2 cm in greatest dimension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Urinary bladder tumor invades muscle | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Renal pelvis/ureter tumor invades the muscularis | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a: Urinary bladder tumor invades superficial muscle (inner half) | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2b: Urinary bladder tumor invades deep muscle (outer half) | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Testicular tumor limited to the testis and epididymis with vascular/lymphatic invasion or tumor extending through tunica albuginea with involvement of tunica vaginalis | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (II): Trophoblast: gestational trophoblastic tumor extends outside of the uterus but is limited to the genital structures (adnexa, vagina, broad ligament) | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (IIA): Trophoblast: gestational trophoblastic tumor involving genital structure without risk factors | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (IIB): Trophoblast: gestational trophoblastic tumor extends outside of the uterus but limited to genital structures with one risk factor | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2 (IIC): Trophoblast: gestational trophoblastic tumor extends outside of the uterus but limited to genital structures with two risk factors | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Pleural tumor invades any of the following: ipsilateral lung, endothoracic fascia, diaphragm, or pericardium | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Tumor > 1 cm but < 4 cm, limited to thyroid | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Ovarian tumor involves one or both ovaries with pelvic extension | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2a (IIA): Ovarian tumor with extension and/or implants on uterus and/or tube(s) | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| T2: Tumor confined within the prostate | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  | 
| pT2 category | Is a | False | T2 category | Inferred relationship | Existential restriction modifier |  |